************************************************************* *** Source: Thomas J. Conway *** *** Pieter Tans *** *** Lee S. Waterman *** *** National Oceanic & Atmospheric Administration *** *** Climate Monitoring and Diagnostics Laboratory *** *** 325 Broadway *** *** Boulder, Colorado 80303 *** ************************************************************* 1976 -99.99 -99.99 334.0 335.7 336.4 334.6 331.4 328.9 328.6 330.1 331.9 332.6 -99.99 1977 333.7 334.4 334.9 336.8 337.9 336.5 334.8 332.8 331.1 331.5 333.0 334.3 334.3 1978 335.6 336.7 337.6 338.3 339.4 338.9 335.8 332.7 331.4 332.6 334.4 335.6 335.8 1979 337.1 338.6 339.3 339.9 341.2 340.1 336.6 334.3 333.2 334.3 336.9 337.3 337.4 1980 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 339.9 337.0 335.5 336.5 338.0 339.1 -99.99 1981 341.0 341.8 342.2 343.4 343.9 342.5 339.6 337.3 336.6 337.7 339.1 340.1 340.4 1982 341.5 342.8 343.7 344.5 344.9 343.5 340.8 338.5 336.8 337.5 339.5 340.9 341.2 1983 341.9 343.4 344.7 345.6 346.0 345.1 342.7 339.2 338.2 339.9 341.6 342.9 342.6 1984 344.1 345.2 346.2 347.5 347.9 346.7 343.8 340.5 340.2 341.4 342.9 344.6 344.3 1985 345.7 346.5 347.3 348.4 349.6 348.6 345.8 342.6 341.2 342.7 344.7 346.2 345.8 1986 347.2 347.6 348.4 349.4 350.0 349.2 346.7 344.4 343.3 343.8 345.9 347.5 347.0 1987 348.9 349.4 349.9 351.2 352.3 351.3 348.2 345.9 344.9 345.8 347.9 349.5 348.8 1988 350.8 351.9 352.7 354.0 354.8 353.8 351.5 348.4 347.5 349.4 350.6 351.8 351.4 1989 352.8 353.1 354.3 356.2 356.5 355.0 352.4 349.9 349.2 350.0 351.9 353.7 352.9 1990 354.6 355.7 356.4 357.1 357.3 355.6 353.4 351.6 350.2 351.0 353.2 354.9 354.3 1991 355.7 356.6 357.7 359.3 359.8 357.9 355.5 352.6 351.4 352.6 354.3 355.7 355.8 1992 357.4 358.3 358.6 359.4 359.8 358.1 355.6 353.3 351.7 352.8 354.9 356.2 356.3